Question

what are some types of primary and secondary producers?

Answer 1

A primary producer would be vegetative life, like grass, while a secondary producer would be a direct consumer of the grass, such as a rabbit. They fill in the bottom tiers of the food web.
You can come up with lots more examples if you imagine that framework in a different ecosystem. Like, what would the vegetation/producer be in a tundra? Or under the ocean? There are a myriad of examples you can use.